Byang's Day Out!Byang and his little brother Kuno loves Cricket. But they never went to the stadium to watch a match...

Life of DecimalsGiven any circle, if you divide the circumference of that circle with its diameter, you would always...

Lexicographical Smallest StringThere is a string sss of length nnn containing lowercase letters and an integer kkk. Among the lette...

Make It Big!You are given a number N (10 ≤ N ≤ 2×109). You have to perform exactly two swap operation. You can c...

Itsy's Magic CardsItsy needs your help with her magic cards. Her magic cards grant her special spiderwitch powers. Un...

GPA CalculatorShibli is a very good student. He is very regular and attentive in his classes. He is very serious a...

Alayna and VowelsAlayna loves playing. Every night before going to sleep, she plays different games with Baba. Now Al...

CGPA, the Golden Egg!Jenith is a student of CSE of Metropolitan University (MU). Recently her fifth term’s result has bee...

Sofdor Ali's Magical Blackboard!Sofdor Ali found interest in mathematics very early in his life. And now, he wants to spread this in...

Arya’s CountingLittle Arya has learnt to count the highest and the lowest number recently. She can easily find out ...

Alice and the ChessboardIt's Sunday afternoon, and Alice is in her room trying to figure out the rules of the game called Ch...

Arithmetic Sequence (Easy)Arithmetic Sequence is a sequence of numbers where the difference between two consecutive numbers ar...

Oh No! Classes!You will be given three pairs of integers, which denotes the starting and ending time in seconds of ...

Burger KingEvery day, more than 11 million guests visit BURGER KING® restaurants around the world. And they do ...

Alayna's Adventure JourneyAlayna recently went on her first adventure journey to Dumbulla Safari Park. She enjoyed the bumpy r...

Alayna and StringsAlayna's father Baba gifted her a nice alphabet book last month. And now Alayna is in love with alph...

Geometry ForeverFear no more, this is a problem of geometry! When Moyna was little, he had a math teacher named Shuk...

Anita's ExperimentLittle Anita is doing an experiment with herself. Everyday, depending on her mood, she determines a ...

Sweety Miya The SaverThe universe is at war again because of the Alien oppressive ruler Hitla Nagasaki. Hitla is so bruta...

I Did Not Do the AssignmentProfessor Petr is very angry over some of his students nowadays for not doing assignment. He wants...

Circle of BoltuBoltu and Poltu are two best friends. Boltu loves to play games in computer. When class is off, inst...

Crossword PuzzlesA crossword puzzle is usually a grid of RxC cells. Initially, each cell is either empty or blocked. ...

Game of TicTacToeAlice and Bob is a playing a game of tictactoe, to be precise a variant of tictactoe called Nota...

Palindromic Naming ConventionIn Strangeland, people name their child in a cute way. I'm sure you already know the way by the prob...

Yet Another Xinversion !The problem statement is simple. You are given a rooted tree (111 is the root) and every node has a ...

2Sat, Adhoc, ApolloneasTheorem, Backtracking, BFS, Bignum, BinarySearch, BipartiteMatching, Bitmask, BruteForce, ChineseRemainderTheorem, Combinatorics, ConvexHull, CutVertex, DataStructure, DFS, DigitDP, DisjointSets, DivideAndConquer, DP, Eertree, EulerTour, ExpectedValue, FenwickTree, FFT, Flow, Game, GCD, Geometry, Graph, Greedy, Hashing, HeavyLightDecomposition, Implementation, InclusionExclusion, Interactive, KnuthMorrisPratt, LowestCommonAncestor, Math, Matrix, MatrixExponentiation, MergeSortTree, ModularExponentiation, MOSAlgorithm, MST, NTT, NumberTheory, Parsing, PersistentLiChaoTree, PersistentSegmentTree, PollardRho, PriorityQueue, Probability, Queue, RabinMiller, RangeOrderStatistics, Scheduling, SegmentTree, ShortestPath, Simulation, Sorting, SparseTable, SpragueGrundyTheorem, SqrtDecomposition, Stack, String, StronglyConnectedComponents, SuffixStructure, TernarySearch, Tree, Trie, TwoPointer, WaveletTree